Home / 13,440.68-20,162.94-5,647.40

Finding the Fourth Proportional to 13,440.68, 20,162.94 and 5,647.40

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Solution

The fourth proportional to 13,440.68, 20,162.94 and 5,647.40 is: 8,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.68 : 20,162.94 = 5,647.40 : x
  2. Step 2: Convert to fraction form
    13,440.68/20,162.94 = 5,647.40/x
  3. Step 3: Cross multiply
    13,440.68x = 20,162.94 × 5,647.40
  4. Step 4: Simplify right side
    13,440.68x = 113,868,187.36
  5. Step 5: Solve for x
    x = 113,868,187.36/13,440.68
  6. Step 6: Final answer
    x = 8,471.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.